Carburetor



D'. BEST. GARBURET-OR.

1 N0 Model.)

No. 485,526. PatentedNov. 1, 1892.

Vof th(` United tates, residing at San Leandro,

UNrrED STATES ATENT DANIEL BEST, OF SAN LEANDRO, CALIFORNIA.

CARBURETOR.

SPECIFICATION forming part of Letters Patent No. 485,526, dated November 1, 1892.

Application filed April 25, 1892.

To all whom, it may concern:

Be it known that I, DANIEL BEST, a citizen Alameda county, State of California, have invented an Improvement in Oarburetors; and I hereby declare the following to be a full, clear, and exact descriptionof the same.

My invention relates to a novel device for supplying gas-engines with explosive vapor.

It consists in certain details of construction,

which will be more fully explained by referencetotheaccompanyingdrawings,in which- Figure l is a vertical cross-section through the carburetor. Fig. 2 is a moditication.

The object of my invention is t0 provide an apparatus by which I am enabled to employ oils of a heavier grade than can be ordinarily used for the supply of gas-engines and other purposes.

In the usual methods of carbureting air it is customary to pass the air through or lover the surface of a body of hydrocarbon oil contained in a suitable vessel, and in this manner the lighter vapor passes off first until'the gravity of the remainder is so reduced that it is of no further value as a vapor-producer.

In my apparatus I pass the liquid in small quantities over or through a 'mass of material, by which it is further subdivided, andv expose it in this condition to a current of air which is passed through it. i

I further increase the efficiency of. the process by raisingr the temperature of the chamber, so that a larger proportion of vapor is obtained, and the vapor so obtained is especially valuable for use in gas-engines, because it has a greater expansive force than that 0btained from the lighter oils.

In carrying out my invention I employ a chamber-A, of any suitable dimensions, which is filled with chips, shavings, or coarse iron turnings or boi-ings. The oil is delivered into the upper part of the chamber through a pipe G from a reservoir D, either directly or through au intermediate receiver F and a cock E. If the oil used is of a sufi'iciently-high gravity, as it is termed, a current of ordinary air is passed through the chamber A and becomes charged with the vapor; but if a heavy oil is used it is desirable to heat the air before it enters by contact with some heated surface, which assists in the release of the va- Serial No. 430,602. (No model por and has the additional advantagev that it counteracts the tendency of rapid evaporation to produce a low temperature of the va-` por. Various devices may be employed for this purpose, either exhauststeam,hot water from the jacket of a gas-engine cylinder, the heat of lamps, or the exhaust from the cyl inder.

In Fig. 1 I have shown the following construction:

A is a tube of considerable length, which I have here shown set in a vertical position open at the top and closed at the bottom. Through this tube passes a smaller tube B, and the bottom of the tube A is fitted tight around the tube where the latter passes through it. The upper end of the tubeAis open,and it is filled with any loose heat-conductio g medium, such as chips or coarse iron turnings from lathes or any similar suitable material. Surrounding the tube A is a third tube C of considerably-larger diameter open at the lower end and fitting closely around the tube B at the top. l

D is a tank or reservoir containing hydrocarbon oil, which may be of considerablyheavier gravity than is ordinarily employed for gas-engines. This tank is situated at any suitable or convenientdistance from the engine and is connected by a pipe with a feedcock E, through which the oil is dropped as rapidly as may be desired into the chamber F and is conveyed therefrom by pipe G,which delivers it by means of a distributer H into the upper part of the tube A. The oil thus delivered trickles down through the material contained in the tube and sufficient heat is passed through the tube B to vaporize the oil as it passes downward.

I is the feed-pipe, leading from the lower part ofthe tube A and delivering through the valve to the engine-cylinder, which, as is usual with this class of engines, acts as a pump during one portion of its stroke and draws the vapor through the pipe A and into the enginecylinder. This action of the engine draws in a quantity of air through the lower part of the pipe C, which, passing up alongside the pipe A, enters at the top and passes downward with the vapor of the oil, mixing with it and passing out through the feed-pipe I in the form of an explosive vapor, such as is IOO ' vaporizing-ohe'niber 2 een, ee

used in gas-engines., That portion of the pipe A which extends below the feed-pipe i will s eoflleot any heavy unvaporized oii, and by .ineens of aiaucet .i at the iower end this may "be drawn o from time to time; By means of this apparatus i amenabled te employ a class of cheap heavy oil which eouid not otherwise be used in gas'engines, and ej/ thus heating the oil I vaporize a very muoia isrger proportion and have oorrespondingly-iess Waste in the generator. The interior pipe E, from which the chamber A is heated, may bev supplied with steam, het air, or heet by any' suitable means for the purpose. -When usedin -eonjunction with gas engines, a sufficient amount of heat is supplied by using4 theipipe B as an exheustpipe for the engine.:

'in Fig. 2 I have shown the pipes A end C, throughvrhioh the air passes to be heated by the pipe B, and it is led thence to a seperate E, from whion the is the pipe i, es previously dedelivered b 1 scribed.

Having thus described my invention, what I claim as new, and desire to seeure by Letand ,middle tubes, said inner tube oonneoting with@J sourceglfuhentend Seid outer tube bev-fv 1 ing its upper end tightly fitted; to the inner tube and having its lower end lopen and said middie tube having its lower end tightly fitted to the inner tube'w'ith its upper end open and entering the outer tube, a metaliic packing within the middle tubeandsuu'ounding the inner tubeto'oiid not' heat therefrom, a means for supplying hydrocarbon to the open end of the middle tube, so that. it shall pass through the said packing to be subdivided and subjected to the action of the heat therein oontained, and a discharge-pipe for the carbu` reted uit', substantially as herein described.

2. in acerburetor, the combination of the concentric vertically-disposed tubes, the outer end intermediate tubes being supported by the inner tube, said outer tube being open at the bottom and said intermediatetube havin' a packing of metalli@ fragments which surrounds the inner tube, a distributer coutiguous to the upper open end of the middie tube, means for supplying h ydrooarbon thereto, a draw-oit eoekV at the bottom of the said middle tube, and a disehurge-pipepleading from seid tube at a point above its bottom,

substantialiy :is herein described.

- in Witness Whereot have hereunto set my hand.'

DANIEL Bns'r.

Witn esses:

@H GRAv..,

N. HENRIKSEN. 

